EP0764293B1 - Systeme de commande d'un moteur à courant continu avec circuit de contrÔle et transistor de coupure montés en série avec des enroulements de relais - Google Patents

Systeme de commande d'un moteur à courant continu avec circuit de contrÔle et transistor de coupure montés en série avec des enroulements de relais Download PDF

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Publication number
EP0764293B1
EP0764293B1 EP96903913A EP96903913A EP0764293B1 EP 0764293 B1 EP0764293 B1 EP 0764293B1 EP 96903913 A EP96903913 A EP 96903913A EP 96903913 A EP96903913 A EP 96903913A EP 0764293 B1 EP0764293 B1 EP 0764293B1
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EP
European Patent Office
Prior art keywords
signal
switch
relay
control
semiconductor switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96903913A
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German (de)
English (en)
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EP0764293A1 (fr
Inventor
Klaus VÖHRINGER
Klaus Spinner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
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Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0764293A1 publication Critical patent/EP0764293A1/fr
Application granted granted Critical
Publication of EP0764293B1 publication Critical patent/EP0764293B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/0833—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements
    • H02H7/0844—Fail safe control, e.g. by comparing control signal and controlled current, isolating motor on commutation error

Definitions

  • the invention is based on a device for operation an adjustment drive according to the genre of the independent Claim.
  • a generic device is from the DE patent 31 35 888 known, which is parked on a safety device which the in a transistor controlled switching device for the Clockwise / counterclockwise rotation of a servomotor signals occurring linked in such a way that a shutdown of the servomotor in If an error is caused
  • the previously known Device includes error detection logic that alloyed transistors and blocked Switching devices, for example gluing Relay contacts recognized as faulty.
  • the error detection logic triggers a shutdown of the in the Actuator included actuator when not present of control signals at both control inputs of the two Transistors and at a simultaneously occurring, the Switch signal corresponding signal at the output at least one of the two transistors.
  • the error detection logic also triggers a shutdown There are no control signals at both control inputs of the two transistors and at one at the same time existing, corresponding to the switch-on potential Potential at at least one connection of the servomotor.
  • the simultaneous Applying the control signals causes the servomotor is kept currentless.
  • Document JP-A-60 067262 describes an engine controller with an additional relay to switch off the power supply, if an error is detected. This relay is not in series with the relay windings of the in the figure shown relay switched.
  • the invention has for its object a device to operate an adjustment drive, specify a offers increased security in the event of a fault.
  • a circuit for operating a Actuator which is a relay-controlled device for the clockwise / counterclockwise rotation of a servomotor and one first semiconductor switch for energizing a first Relay winding and a second semiconductor switch for Energizing a second relay winding, provided that at least a third semiconductor switch is present, the one in series with the first winding and in series with the second winding is switched.
  • the third semiconductor switch By switching on and off the third semiconductor switch, the current flow through the Relay windings blocked or enabled.
  • An advantageous embodiment provides that the at least a third semiconductor switch only then is switched on when either the first or the second semiconductor switch should be turned on. This measure prevents accidental Commissioning the actuator in the event of a defect, for example, alloying the first or the second semiconductor switch.
  • the design looks dynamic control of at least one third Semiconductor switch and optionally the first and the second semiconductor switch.
  • the dynamic control enables the relevant one to be switched on Semiconductor switch only with one AC signal.
  • a defect in one Control circuit providing control signals, in which the Control signals have a DC voltage level leads then not that the adjustment drive inadvertently Movement is set.
  • a particularly advantageous further development sees the use a safety device based on a Plausibility check at least checks whether the first or the second semiconductor switch is alloyed.
  • the safety device preferably obtains from Check the relay controlled switching device to to detect sticking of a relay contact.
  • the safety device preferably receives further signals in the review.
  • the safety device emits a first shutdown signal in the absence of control signals on both Control inputs of the first and second semiconductor switches and if the switch-on signal occurs at the same time corresponding signal at the output of the first or the second Semiconductor switch.
  • the safety device issues a second shutdown signal off in the absence of control signals on both Control inputs of the first and second semiconductor switches and with a present, the Switch-on potential corresponding to at least a connection of the servomotor.
  • Another measure that leads to a third shutdown signal leads sees a comparison of at least the control signals of the first and second semiconductor switches with a signal, that reflects the state of motion of the adjustment drive.
  • the first and third shutdown signal at least at one alloyed first and second semiconductor switches can be used to specify Control signals for the first and second Semiconductor switches, the respective switch-on signals correspond.
  • the current flow through the alloyed first or second semiconductor switch is with this Measure blocked. Both relay windings are de-energized and thus switch off the adjustment drive.
  • the second shutdown signal which is a sticking of a Relay contact signals can also be used are used to energize both relay windings. In addition to the adhesive contact, the contact of the other relay switched on, so that the servomotor is stopped.
  • the adjustment drive is preferably used in a motor vehicle used.
  • Such adjustment drives are, for example Window lifter drive, a sliding sunroof drive or for example a seat adjustment drive.
  • FIG. 1 A block diagram of an inventive device for Operating an adjustment drive is shown in the figure.
  • the figure shows an actuator 10, the one Adjustment drive 11 actuated.
  • the clockwise / counterclockwise rotation of the Actuator 10 is controlled by a relay Switching device 12 set a first and second switch 13, 14 contains.
  • the first switch 13 is by means of a first relay winding 15 and the second Switch 14 by means of a second relay winding 16 operated.
  • the first switch 13 connects a first Connection 17 of the servomotor 10 either with a mass 18th or a power connector 19.
  • the second Switch 14 connects a second terminal 20 of the Actuator 10 with either the mass 18 or the Power supply connector 19. Between ground 18 and the Power supply connector 19 is a power source 21 switched.
  • the first relay winding 15, which at an output 22 a first semiconductor switch 23 is connected can the first semiconductor switch 23 connected to the ground 18 will.
  • the second relay winding 16, which is at an output 24 of a second semiconductor switch 25 is connected, can also with the second semiconductor switch 25 Mass 18 are connected.
  • the two relay windings 15, 16 are connected to the via a third semiconductor switch 26 Power supply connector 19 connectable.
  • a control circuit 27 provides a first control signal 28 for the first semiconductor switch 23, a second Control signal 29 for the second semiconductor switch 25 and a third control signal 30 for the third Semiconductor switch 26 ready.
  • the first control signal 28 is via a first signal converter 31 to a control input 32 of the first semiconductor switch 23, the second control signal 29 via a second signal converter 33 a control input 34 of the second semiconductor switch 25 and the third Control signal 30 via a third signal converter 35 Control input 36 of the third semiconductor switch 26 fed.
  • the third signal converter 35 is shown in detail. Of the first and second signal converters 31, 33 are analogous to third signal converter 35 can be implemented.
  • the third Signal converter 35 contains an isolating capacitor 37 through which the third control signal 30 is carried. In line with the Isolation capacitor 37 is connected to a diode 38 which a control input 39 of a fourth semiconductor switch 40 connected is.
  • the control input 39 is via a Discharge resistor 41 and via a storage capacitor 42 each connected to ground 18.
  • the fourth Semiconductor switch 40 in series with one Current limiting resistor 43 is connected, connects the Control input 36 of the third semiconductor switch 26 with Mass 18.
  • a safety device 44 gives a first, second and third shutdown signal 45, 46, 57 to the control circuit 27 from.
  • the safety device 44 performs one Plausibility check of those at the control inputs 32, 34 the first two semiconductor switches 23, 25 both in relation on the outputs 22, 24 of the first two Semiconductor switches 23, 25 signals occurring as well Reference to the at the two connections 17, 20 of the Actuator 10 occurring potentials as well one provided by a motion state detector 58 Movement status signal 59 through.
  • the control inputs 32, 34 of the semiconductor switches 23, 25 are connected to an equivalent circuit 47.
  • the Equivalence circuit 47 inputs an equivalence signal 48 first AND gate 49, a second AND gate 50 and one third AND gate 60 from.
  • the outputs 22, 24 of the semiconductor switches 23, 25 are each via diodes 51, 52 with a first inverter 53 connected to an output signal to the first AND gate 49 delivers.
  • the two motor connections 17, 20 are each over Diodes 54, 55 connected to a second inverter 56, which outputs an output signal to the second AND gate 50.
  • the inventive device for operating the Adjustment drive 11 works as follows:
  • the control circuit 27 provides the first two Control signals 28, 29 for triggering clockwise rotation or Counterclockwise rotation of the servomotor 10 ready.
  • the first control signal 28 triggers a clockwise rotation of the servomotor 10, for example out.
  • the occurrence of the first control signal 28 after Passing through the first signal converter 31 which is in communication with the control of the third semiconductor switch 26 closer is explained at the control input 32 of the first Semiconductor switch 23 switches the first Semiconductor switch 23 and connects the first Relay winding 15 with ground 18.
  • a current flow in the first Relay winding 15 is only possible if the third semiconductor switch 26 is turned on, the first relay winding 15 with the power supply connection 19 connects.
  • the third Control signal 30 to turn on the third Semiconductor switch 26 from the control circuit 27 to be provided.
  • the third control signal 30 arrives in the third Signal converter 35, which has the task of the AC signal present third control signal 30 in one for driving the third semiconductor switch 26 transform appropriate voltage.
  • the separation capacitor 27 separates any existing ones DC voltage components in the third control signal 30.
  • the AC voltage signal then passes through the diode 38 to the storage capacitor 42. Together with the Discharge resistor 41 form the storage capacitor 42 and the diode 38 has a peak voltage detector, the Time constant from the capacitance value of the storage capacitor 42 and depends on the resistance value of the discharge resistor 41. Is at the control input 39 of the fourth semiconductor switch 40 an at least approximately AC-free Voltage for switching the fourth semiconductor switch 40 ready, the over the current limiting resistor 43 the third semiconductor switch 26 turns on if necessary.
  • the two relay windings 15, 16th connects to the power supply terminal 19 are two third semiconductor switches 26 can equally be used, the relay windings 15, 16 each separated with the Connect the power supply connector 19.
  • the at least one third semiconductor switch 26 is preferably only switched on when simultaneously either the first or the second control signal 28, 29 for Switching on the first or the second semiconductor switch 23, 25 are present. For example, a defect occurs in one the first two semiconductor switches 23, 25, for example alloying, the servomotor 10 remains because of the off state of the third semiconductor switch 26 switched off. An incorrect switch-on of the servomotor does not occur in this operating case.
  • the Safety device 44 basically leads Plausibility considerations by comparing the to the Control inputs 32, 34 of the first two semiconductor switches 23, 25 occurring signals with each other as well as in relation on the outputs 22, 24 of the first two Semiconductor switches 23, 25 occurring signals or the the connections 17, 20 of the servomotor 10 occurring Potentials or the movement status signal 59.
  • the equivalence signal determined by the equivalence circuit 47 48 only occurs when the control inputs 32, 34 of the first two semiconductor switches 23, 25 present Signals are identical.
  • the first shutdown signal 45 from first AND gate 49 is output occurs when that Equivalence signal 48 is present and if at the same time the first Inverter 53 outputs a signal.
  • the first inverter 53 emits a signal if either at the output 22 of the first semiconductor switch 23 or at the output 24 of the second Semiconductor switch 25, a switch-on signal is present, which Current flow through at least one of the two relay windings 15, 16 releases.
  • the OR link is made with the diodes 51, 52 realized. Because it's a power on state corresponding signals at the outputs 22, 24 of the Semiconductor switches 23, 25 have an L level, is the first inverter 53 is provided, one of the L level H level for driving the first AND gate 49 provides.
  • the first shutdown signal 45 thus occurs in the absence of control signals at the control inputs 32, 34 of the semiconductor switches 23, 25 and one occurring simultaneously, the switch-on state corresponding signal at at least one output 22, 24 one of the two semiconductor switches 23, 25.
  • the Safety device 44 issues the first shutdown signal 45 especially when alloying at least one of the Semiconductor switches 23, 25 from.
  • the second shutdown signal 46 which is the second AND gate 50 is also made from the equivalence signal 48 derived, which must occur simultaneously with that of signal provided to second inverter 56.
  • the second Inverter 56 outputs an H level if at least a connection 17, 20 a potential occurs that the Potential at the power supply terminal 19 corresponds.
  • the OR linkage is implemented with diodes 54, 55.
  • the second shutdown signal 46 accordingly occurs Absence of signals at the control inputs 32, 34 of the two semiconductor switches 23, 25, the one Correspond to the on state, and at the same time existing, corresponding to the switch-on potential Potential at at least one connection 17, 20 of the Servomotor 10.
  • the third shutdown signal 57 which is the third AND gate 60 is also made from the equivalence signal 48 derived, which must occur simultaneously with that of Movement state detector 58 provided Movement status signal 59. This signal is present when the adjustment drive 11 moves.
  • the Movement state detector 58 is used, for example, with a Position detector, preferably a Hall effect sensor realized.
  • a detector 58 is also suitable Signal, preferably an AC voltage signal from which derives current flowing through the actuator 10.
  • the third shutdown signal 57 is accordingly present Absence of signals at the control inputs 32, 34 of the two semiconductor switches 23, 25, the one Correspond to the on state, and at the same time detected movement of the adjustment drive 11.
  • the first and third shutdown signals 45, 57 in particular indicate that the first or second semiconductor switch 23, 25 is alloyed, can in the control circuit 27 for Output of the control signals 28, 29 are used, the one Switch-on state by energizing both relay windings 15, 16 correspond.
  • This measure ensures that in addition the switch 13, 14, which is caused by the faulty energization the associated relay winding 15, 16 for example from Ground 18 is connected to the power supply connection 19, the other switch 13, 40 is operated simultaneously, so that the servomotor 10 is switched off.
  • the simultaneous output of control signals 28, 29 that Switch-on signals correspond to is without any problems Switching devices 12 can be used, the separate relay contain.
  • the measure of using the at least a third semiconductor switch 26 which the Relay windings 15, 16 with the power supply connection 19th connects, enables in response in the control circuit 27 the occurrence of the first and third switch-off signals 45, 57 the prevention of energization of that relay winding 15, 16, which is faulty due to the alloyed Semiconductor switches 23, 25 would be present.
  • the appearance of the first and third shutdown signal 45, 57 causes the Output of the control signal 30, which is a shutdown signal of the corresponds to third semiconductor switch 26.
  • the measure provides that the third Control signal 31 the third semiconductor switch 26 anyway only switches on if the first or the one at the same time second control signal 28, 29 are present, the first Shutdown signal 45 not required. That in the Safety device existing first AND gate 49, the Diodes 51, 52 and the first inverter 53 can then omitted.

Landscapes

  • Control Of Electric Motors In General (AREA)
  • Control Of Direct Current Motors (AREA)
  • Relay Circuits (AREA)

Claims (11)

  1. Dispositif pour faire fonctionner un mécanisme d'entraínement réglable, qui contient un dispositif de commutation commandé par relais pour la marche à droite ou la marche à gauche d'un servomoteur, comprenant un premier interrupteur à semi-conducteurs servant à alimenter en courant un premier enroulement de relais et un deuxième interrupteur à semi-conducteurs servant à alimenter en courant un deuxième enroulement de relais,
    caractérisé en ce qu'
    on prévoit au moins un troisième interrupteur à semi-conducteurs (26), qui est monté en série avec le premier enroulement de relais (15) et en série avec le deuxième enroulement de relais (16) et qui bloque ou autorise le passage du courant à travers les enroulements de relais (15, 16) en branchant ou débranchant le passage du courant.
  2. Dispositif selon la revendication 1,
    caractérisé en ce qu'
    on ne branche au moins un troisième interrupteur à semi-conducteurs (26) et on ne laisse passer le courant à travers les enroulements de relais (15, 16) que quand le premier ou le deuxième interrupteur à semi-conducteurs (23, 25) sont branchés.
  3. Dispositif selon la revendication 1,
    caractérisé en ce qu'
    on prévoit un circuit de commande (27), qui fournit des signaux de commande (28, 29, 30) pour brancher et débrancher les interrupteurs à semi-conducteurs (23, 25, 26) de telle sorte que le circuit de commande (27) fournisse au moins un signal de commande (28, 29, 30) sous la forme d'un signal de tension alternative et qu'il soit prévu au moins un convertisseur de signaux (31, 33, 35) qui convertisse le signal de commande (28, 29, 30) en un signal, qui soit amené aux entrées de commande (32, 34, 36) des interrupteurs à semi-conducteurs (23, 25, 26).
  4. Dispositif selon la revendication 1,
    caractérisé en ce que
    il y a un dispositif de sécurité (44), qui délivre un premier signal de débranchement (45) quand il n'y a pas de signaux de commande aux entrées de commande (32, 34) du premier ou du second interrupteur à semi-conducteurs (23, 25), qui correspondent à un état de branchement, et quand est produit en même temps un signal, qui correspond à l'état de branchement à la sortie (22, 24) d'au moins l'un des deux interrupteurs à semi-conducteurs (23, 25).
  5. Dispositif selon la revendication 1,
    caractérisé en ce que
    il y a un dispositif de sécurité (44), qui délivre un troisième signal de débranchement (57), quand il n'y a pas de signal de commande (28, 29) aux entrées de commande (32, 34) du premier ou du deuxième interrupteur à semi-conducteurs (23, 25), qui correspondent à un état de branchement et quand il se produit en même temps un signal de l'état des mouvements (59), qui indique un mouvement du mécanisme d'entraínement réglable (11) ou du servomoteur (10).
  6. Dispositif selon la revendication 4 ou 5,
    caractérisé en ce que
    le premier et le troisième signal de débranchement (45, 57) préparent les signaux de commande (28, 29), qui correspondent à une alimentation en courant simultanée des deux enroulements de relais (15, 16).
  7. Dispositif selon la revendication 1,
    caractérisé en ce qu'
    il y a un dispositif de sécurité (44) qui délivre un deuxième signal de débranchement (46) quand il n'y a pas de signaux de commande (28, 29) aux entrées de commande (32, 34) du premier ou du second interrupteur à semi-conducteurs (23, 25), qui correspondent à des signaux de branchement, et quand il y a en même temps un potentiel, qui correspond au potentiel de branchement, sur au moins un raccord (17, 20) du servomoteur (10).
  8. Dispositif selon la revendication 7,
    caractérisé en ce que
    le deuxième signal de débranchement (46) déclenche la préparation des signaux de commande (28, 29), qui correspondent à une alimentation simultanée en courant des deux enroulements de relais (15, 16).
  9. Dispositif selon la revendication 4 ou 5,
    caractérisé en ce que
    le premier et le troisième signal de débranchement (45, 57) déclenche la préparation d'un signal de commande (30), qui mène à un débranchement d'au moins un troisième interrupteur à semi-conducteurs (26).
  10. Dispositif selon la revendication 1,
    caractérisé en ce que
    le dispositif de commutation (12) commandé par relais est réalisé avec un relais double, qui présente deux enroulements de relais (15, 16), deux interrupteurs (13,14), et seulement une armature.
  11. Dispositif selon la revendication 1,
    caractérisé en ce que
    le mécanisme d'entraínement réglable (11) est disposé dans un véhicule à moteur.
EP96903913A 1995-04-07 1996-02-29 Systeme de commande d'un moteur à courant continu avec circuit de contrÔle et transistor de coupure montés en série avec des enroulements de relais Expired - Lifetime EP0764293B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19513157 1995-04-07
DE19513157A DE19513157A1 (de) 1995-04-07 1995-04-07 Vorrichtung zum Betreiben eines Verstellantriebs
PCT/DE1996/000334 WO1996031812A1 (fr) 1995-04-07 1996-02-29 Systeme de commande d'un moteur c.c. avec circuit de controle et transistor de coupure montes en serie avec les enroulements de relais

Publications (2)

Publication Number Publication Date
EP0764293A1 EP0764293A1 (fr) 1997-03-26
EP0764293B1 true EP0764293B1 (fr) 1998-06-03

Family

ID=7759113

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96903913A Expired - Lifetime EP0764293B1 (fr) 1995-04-07 1996-02-29 Systeme de commande d'un moteur à courant continu avec circuit de contrÔle et transistor de coupure montés en série avec des enroulements de relais

Country Status (6)

Country Link
US (1) US5747884A (fr)
EP (1) EP0764293B1 (fr)
JP (1) JPH10501643A (fr)
DE (2) DE19513157A1 (fr)
ES (1) ES2117482T3 (fr)
WO (1) WO1996031812A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005058899A1 (de) * 2005-12-09 2007-06-14 BSH Bosch und Siemens Hausgeräte GmbH Schaltungsanordnung zum Verriegeln und/oder Entriegeln eines Türschlosses, insbesondere in einem elektrischen Hausgerät
US9929556B2 (en) 2014-09-30 2018-03-27 Stmicroelectronics S.R.L. Fail-safe device corresponding apparatus and vehicle

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1114015A (fr) * 1977-11-21 1981-12-08 Westinghouse Canada Limited Dispositif de protection des transistors de puissance pour amplificateur de puissance a montage en h
DE3135888A1 (de) * 1981-09-10 1983-03-24 Robert Bosch Gmbh, 7000 Stuttgart Sicherheitseinrichtung fuer eine elektrische stellvorrichtung
JPS6067262A (ja) * 1983-09-21 1985-04-17 Hitachi Ltd 電動式パワ−ステアリング制御装置
JPS6169389A (ja) * 1984-09-13 1986-04-09 Fujitsu Ltd 直流モ−タ制御方法
JP2594573Y2 (ja) * 1993-11-02 1999-04-26 住友電装株式会社 リレーの異常検知装置
KR0171240B1 (ko) * 1994-05-17 1999-05-01 가다오까 마사다까 차량탑재용 모터구동장치
US5572098A (en) * 1994-07-01 1996-11-05 General Motors Corporation Motor vehicle accessory control with control module having single power terminal

Also Published As

Publication number Publication date
US5747884A (en) 1998-05-05
EP0764293A1 (fr) 1997-03-26
DE59600242D1 (de) 1998-07-09
WO1996031812A1 (fr) 1996-10-10
DE19513157A1 (de) 1996-10-10
ES2117482T3 (es) 1998-08-01
JPH10501643A (ja) 1998-02-10

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